RG-421: Coliform Monitoring, Analyzing, and Reporting
Intended for operators of public water systems, this publication is a guide to the regulatory requirements related to microbial monitoring, reporting, compliance, and public notification, including the Revised Total Coliform Rule and the Groundwater Rule.
https://www.tceq.texas.gov/downloads/drinking-water/microbial/rg-421.pdf/view
https://www.tceq.texas.gov/@@site-logo/TCEQ-logo-header.png
RG-421: Coliform Monitoring, Analyzing, and Reporting
Intended for operators of public water systems, this publication is a guide to the regulatory requirements related to microbial monitoring, reporting, compliance, and public notification, including the Revised Total Coliform Rule and the Groundwater Rule.